Table 1 MSCs and MSC-exosomes for therapeutic applications: benefits and drawbacks.

From: Biology and therapeutic potential of mesenchymal stem cell extracellular vesicles in axial spondyloarthritis

 

Positive aspects

Negative aspects

MSCs

Simple to isolate and collect

Probability of transmitting infections

Highly prolific

Concerns over the associated regenerative process

Multilineage differentiation

 

Limited likelihood of immunological issues

 

Cumulated experimental and clinical outcomes

 

MSC-exosomes

Effectiveness via particular proteins in the exosome membranes and natural homing capability

A minimal isolation procedure is indicated

Low chance of teratoma development

No controlled production procedures

Excellent medication delivery system for both hydrophobic and hydrophilic substances

Quick elimination from the bloodstream upon injection (in vivo)

Unaffected by freezing and thawing (compared with cells)

Challenges in isolating and purifying exosomes containing certain bioactive compounds

Paracrine function

Deficiency of methods and tools to precisely characterize the chemical and physical characteristics of exosomes

 

Minimal and restricted investigations on exosome-based treatments

 

Probability of transmitting infections